| 631 | 12 Sep 26 | Gravel X Triathlon | Olympic/sprint offroad triathlon | Granite Bay, CA |
| 632 | 12 Sep 26 | Graniterock River Run | 1M/5K | Hollister, CA |
| 633 | 12 Sep 26 | Emerald Bay Trail Run | 12K | Lake Tahoe, CA |
| 634 | 12 Sep 26 | Berkeley Trail Adventure | 10K/13.1M/35K/50K | Berkeley, CA |
| 635 | 12 Sep 26 | Beer City Half Bishop Ranch | 1M/5K/10K/13.1M | San Ramon, CA |
| 636 | 12 Sep 26 | Angel Stadium Spartan Stadion Weekend | 1K/5K | Anaheim, CA |
| 637 | 12 Sep 26 | The SYTY Marathon | 13.1M/26.2M | San Diego, CA |
| 638 | 13 Sep 26 | 2026 Ironman 70.3 Santa Cruz | triathlon | Santa Cruz, CA |
| 639 | 13 Sep 26 | Pacific Coast Triathlon | ['31.1M'/ '31.2M'/ '12.5M'/ '15.6M'/ '16M'/ '5K'/ 'Triathlon'/ 'Ultra'] | Laguna Beach, CA |
| 640 | 13 Sep 26 | Shaver Lake Triathlon | 5K/10K | Shaver Lake, CA |
| 641 | 13 Sep 26 | Seasonal Confusion 5K. 10K. Half Marathon by Califlow Runs | 5K/10K/13.1M | Long Beach, CA |
| 642 | 13 Sep 26 | Santa Monica Classic 10K/5K | 5K/10K | Santa Monica, CA |
| 643 | 13 Sep 26 | Santa Monica Classic Kids Run | kids run | Santa Monica, CA |
| 644 | 13 Sep 26 | Race to Slow the Pace 5K/10K | 5K/10K | Lodi, CA |
| 645 | 13 Sep 26 | Ironman 70.3 Santa Cruz | half triathlon | Santa Cruz, CA |